aa8c11105d
It is based on olimex_a20_olinuxino_lime configuration. Tested on the mainline kernel 4.1.4. It boots and the Ethernet is working at speed 1 Gbps. [Thomas: remove ccache and optimize 2 options.] Signed-off-by: Jan Viktorin <viktorin@rehivetech.com> Acked-by: Francois Perrad <francois.perrad@gadz.org> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
117 lines
3.5 KiB
Plaintext
117 lines
3.5 KiB
Plaintext
A20-OLinuXino-LIME and A20-OLinuXino-MICRO
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Intro
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=====
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These are open hardware boards, both based an the AllWinners A20 SoC.
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for more details about the boards see the following pages:
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- https://www.olimex.com/Products/OLinuXino/open-source-hardware
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- https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-MICRO/
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- https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-LIME/
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The following defconfigs are available:
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- olimex_a20_olinuxino_micro_defconfig
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for the A20-OLinuXino-MICRO board using mainline kernel
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- olimex_a20_olinuxino_lime_defconfig
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for the A20-OLinuXino-LIME board using mainline kernel
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- olimex_a20_olinuxino_lime_mali_defconfig
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for the A20-OLinuXino-LIME board using legacy linux-sunxi kernel
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- olimex_a20_olinuxino_lime2_defconfig
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for the A20-OLinuXino-LIME2 board using mainline kernel
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The legacy linux-sunxi kernels are based on the vendor code drops.
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They are only useful when accelerated 3D graphics and multimedia support
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is strictly necessary.
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The Mainline Kernel is already a much better choice for a headless server.
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And also the mainline kernel works fine even for a basic Linux desktop
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system running on top of a simple framebuffer, which may be good enough for
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the users who do not need fancy 3D graphics or video playback acceleration.
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(see http://linux-sunxi.org/Linux_Kernel for more details)
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How to build it
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===============
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Configure Buildroot:
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$ make <board>_defconfig
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Compile everything and build the rootfs image:
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$ make
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Result of the build
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-------------------
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After building, you should get a tree like this:
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output/images/
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+-- rootfs.ext2
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+-- rootfs.ext4 -> rootfs.ext2
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+-- script.bin (lime_mali)
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+-- sun7i-a20-olinuxino-lime.dtb (lime, mainline)
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+-- sun7i-a20-olinuxino-lime2.dtb (lime2, mainline)
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+-- sun7i-a20-olinuxino-micro.dtb (micro, mainline)
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+-- u-boot.bin
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+-- u-boot-sunxi-with-spl.bin
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`-- zImage
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How to write the SD card
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========================
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Prepare the SD card
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-------------------
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Erase existing stuff, and create an unique Linux partition with `fdisk`.
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# fdisk /dev/sdX
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Command (m for help): o
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Building a new DOS disklabel with disk identifier 0xf9e1616a.
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Changes will remain in memory only, until you decide to write them.
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After that, of course, the previous content won't be recoverable.
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Command (m for help): n
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Partition type:
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p primary (0 primary, 0 extended, 4 free)
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e extended
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Select (default p): p
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Partition number (1-4, default 1): 1
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First sector (2048-7626751, default 2048): 2048
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Last sector, +sectors or +size{K,M,G} (2048-7626751, default 7626751):
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Using default value 7626751
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Command (m for help): p
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Disk /dev/sdX: 3904 MB, 3904897024 bytes
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4 heads, 16 sectors/track, 119168 cylinders, total 7626752 sectors
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Units = sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disk identifier: 0xf9e1616a
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Device Boot Start End Blocks Id System
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/dev/sdX1 2048 7626751 3812352 83 Linux
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Command (m for help): w
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The partition table has been altered!
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Calling ioctl() to re-read partition table.
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Syncing disks.
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Copy images on the SD card
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--------------------------
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# dd if=output/images/rootfs.ext2 of=/dev/sdX1
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# dd if=output/images/u-boot-sunxi-with-spl.bin of=/dev/sdX bs=1024 seek=8
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Finish
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======
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Eject the SD card, insert it in the A20-OLinuXino board, and power it up.
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